Lojack is a system with severe drawbacks. First, Lojack doesnt tell anyone that his car is being tampered with. Say you go to the movie theatre and there is a bad guy in the parking lot (a bad guy other than a government guy). He steals your car knowing that the movie is 2 hours long. By the time you walk out, he is looooong gone, probably across the border if you are in So Cal. When you walk out, you say, OH S&#(&% and call the cops. Lojack is THEN enabled to search for your car....two hours too late. The cops monitor the Lojack tracking.....not you. Lojack is not available everywhere, all the crook has to do is to get the car outside of the Lojack coverage.

The GPS based uinits like Arrowtrack notify YOUR phone and/or email when someone opens the door, moves the car, etc. YOU can immediately respond with guns blazing or call the cops if you have an hour to wait. YOU can track the car and see on Google Maps where the car is, the one I played with works inside buildings and appears to be accurate within 50 feet inside, less if the car is outside. The system even can tell you if the car battery is disconnected and/or reconnected. This system does everything but shoot the crook....they may be working on that.